Say whaaaat [emoji54] i never knew that!
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Not uncommon issue by any means.
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Well I replaced the FSU about 3 weeks ago and the car still starts after not being driven for 2 weeks - so that is progress
went another 10 days without starting and it turned over on the 1st crank - so the FSR must have been the cause of my battery drain
Johnd - How is your FSR holding up? Any more battery drains? I'm trying to track down a battery drain issue on my daughter's 2004 325ci. She reports no issues with the FSR in terms of fan opperation or speed control. 3 times in the last year she has found the battery dead requiring a jump start. Nothing appartent is being left on causing a drain. After the jump start the car is fine for several months. Before you replaced the FSR was it causing a drain every night or more random in nature?
Thanks
Warren
Does she ever experience the electric engine fan running for long periods after stopping the car, or out of nowhere? We had that happening with the '02 325xi - bad resistor pack or whatever it's called on the electric fan unit itself. Replacing the entire fan unit fixed it. FSR symptoms tend to be fan running when you turn off the car or fan speed selector buttons not controlling fan speed.
My fsr went bad with zero symptoms except for battery drain.
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